I am afraid you have mischaracterized the territorial dispute of Hungary (vs Romania).
Hungary had demanded all of Transylvania, while actually only getting approximately 50% of it.
27,000 sq mi vs 16,792 sq mi.
I would not say that resolved it in favor of Hungary. If anything, it was more of a compromise.They reduced the Hungarian demands to 43,492 km2 (16,792 sq mi), with a population of 2,667,007.
Additionally, DE 611 really depends if and when the USSR demands Bessarabia, as that event really sets everything into motion. (by embolding Hungary to push for additional territorial demands on Romania...)At the Second Vienna Award of 30, 1940, the German Foreign Minister Joachim von Ribbentrop and the Italian Foreign Minister Count Galeazzo Ciano ruled that northern Transylvania was to go to Hungary while southern Transylvania would stay with Romania, a compromise that left both Budapest and Bucharest deeply unhappy with the Vienna award.
see - https://www.wikiwand.com/en/Second_Vienna_AwardHowever, the Hungarian government interpreted the fact that Romania had permanently given up some areas as an admission that it was no longer insisting on keeping its national territory intact under pressure. The Soviet occupation of Bessarabia and Northern Bukovina thus inspired Budapest to escalate its efforts to resolve "the question of Transylvania".
And the USSR demand for Bessarabia being dependent on the Fall of France and the withdrawal of UK forces from the continent.
At the same time, Romania was not fully aligned with the Axis and was actually closer to France, up until their fall in June 1940.
For economic reasons, Romania was far more important to Hitler than was Hungary, but Romania had been allied to France since 1926 and had flirted with joining the British-inspired "peace front" in 1939, so Hitler who personally disliked and mistrusted Carol – felt that Romania deserved to be punished for waiting so long to align with the Axis. After the fall of Paris in June 1940, the Germans had captured the archives of the Quai d'Orsay and were thus well-informed about the double-line that Carol had pursued until the spring of 1940.
see - https://en.wikipedia.org/wiki/Carol_II_of_RomaniaOn 21 June 1940, France signed an armistice with Germany. Romania's elite had been so obsessively Francophile for so long that France's defeat had the effect of discrediting that elite in the eyes of public opinion and led to an upswing of popular support for the pro-German Iron Guard.
This entire event chain really needs to be reworked so that it makes plausible sense.